Evidence-Based Study to Compare Daodi Traditional Chinese Medicinal Material and Non-Daodi Traditional Chinese Medicinal Material

Table 2

Study content categorization of the included studies.

Category	Characteristic	Number (%) of studies,
Contents of article	Clinical trial	1 (0.9%)
	Animal experiment	6 (5.6%)
	GBS and soil physical/chemical properties	2 (1.9%)
	Medicinal composition	24 (22.4%)
	Medicinal composition, GBS, and soil physical-chemical property	15 (14.0%)
	Methodology to ascertain Daodi	59 (55.1%)
Medicinal species	Atractylodis Rhizoma, Lonicerae Japonicae Flos	13 (12.1%)
	Angelicae Sinensis Radix	9 (8.4%)
	Dioscoreae Rhizoma	8 (7.5%)
	Scutellariae Radix, Achyranthis Bidentatae Radix	7 (6.5%)
	Salviae Miltiorrhizae Radix et Rhizoma	6 (5.6%)
	Chuanxiong Rhizoma	5 (4.7%)
	Rehmanniae Radix, Paeonia Lactiflora	4 (3.7%)
	Aconiti Lateralis Radix Praeparata, Alismatis Rhizoma	3 (2.8%)
	Ginseng Radix et Rhizoma, Scrophulariae Radix, Polygalae Radix	2 (1.9%)
	Others	1 (0.9%)